\begin{table}[htbp]\centering
\scriptsize
\caption{OLS and 2SLS regressions of Log Quantity on Log Price with wave height instrument}
\label{2sls_2}
\begin{center}
\begin{threeparttable}
\begin{tabular}{l*{2}{c}}
\toprule
\multicolumn{1}{l}{\textbf{Dependent variable}}&
\multicolumn{2}{c}{\textbf{Log quantity}}\\
\multicolumn{1}{c}{}&
\multicolumn{1}{c}{OLS}&
\multicolumn{1}{c}{2SLS}\\
\midrule
lnp                 &      -0.549***&      -0.960** \\
                    &     (0.184)   &     (0.406)   \\
=1 if Monday        &      -0.318   &      -0.322   \\
                    &     (0.227)   &     (0.225)   \\
=1 if Tuesday       &      -0.684***&      -0.687***\\
                    &     (0.224)   &     (0.221)   \\
=1 if Wednesday     &      -0.535** &      -0.520** \\
                    &     (0.221)   &     (0.219)   \\
=1 if Thursday      &       0.068   &       0.106   \\
                    &     (0.221)   &     (0.222)   \\
time trend          &      -0.001   &      -0.003   \\
                    &     (0.003)   &     (0.003)   \\
\\
\midrule
\multicolumn{1}{c}{First Stage Instrument}\\
Average wave height &               &       0.103***\\
Robust standard error &               &       0.022   \\
F statistic for IV in first stage&               &      22.638   \\
Anderson-Rubin test &               &           .   \\
N                   &          97   &          97   \\
Mean Dependent Variable&       8.086   &       8.086   \\
Std. Dev. Dependent Variable&       0.765   &       0.765   \\
\bottomrule
\end{tabular}
\begin{tablenotes}
\tiny
\item Standard errors in parenthesis. * p$<$0.10, ** p$<$0.05, *** p$<$0.01
\end{tablenotes}
\end{threeparttable}
\end{center}
\end{table}
